Lophodermium, Hypodermella and Elytroderma

Needle Diseases

Lophodermium pinastri on pines

Lophodermium

Hysterothecia (also refered to as apothecia covered by stroma) on pine needles infected by Lophodermium.

Another view of needles with lots of hysterothecia of Lophodermium.

Lophodermium high magnification

Higher magnification of the football-shaped hysteriothecia. When mature the slit in the middle opens releasing ascospores.

asci and ascospores of Lophodermium

Section through the hysterothecium showing asci and long thread-like ascospores

Lophodermium ascospores

When mature and released from the hysterothecia, the long thin ascospores have a sticky sheath that helps them adhere to needles.


Hypodermella pini- on fir

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Large hysterothecia, occupying almost the entire length of the needle, are present on a few of these needles.

Hypodermella

Another view of the long black hysteriothecia that is formed by Hypodermella on fir needles.


Elytroderma deformans - on western species of pine

Elytroderma

Black hysteriothecia produced by Elytroderma on needles of Ponderosa pine.